Sean Tully Sean Tully is a machinist at Underworld and friend of Eileen Grimshaw . Biography . Arrival . Sean first appeared in July 2003 at a party at Weatherfield General where Martin Platt jealously attacked Katy Harris ' s boyfriend , Jimmy Mullins . In April 2004 he was seen again when Karl Foster and Todd Grimshaw had a night out on Manchester ' s Canal Street . In August of that year , he turned up on Coronation Street , looking for somewhere to live . Todd ' s mother , Eileen Grimshaw , took a shine to him and invited him to be her lodger , much to the chagrin of her other son , Jason Grimshaw . When Eileen and Jason fell out over Todd moving away , Eileen asked Sean to move out for a while so she could mend her relationship with Jason . Sean later moved back in . He had a very brief relationship with veterinarian Tim White . Sean works in the Underworld factory , where he has made friends with Fiz Brown and Kelly Crabtree . His former boss Danny Baldwin ' s nickname for him was " Mincemeat " . He works part - time in the Rovers Return as a barman . Kelly once tried to seduce Sean even though she knew he was gay . When he defended himself against her physical advances , he ended up giving her a bruise . Kelly was angry at him and cost him his job by claiming the bruise was from some kind of assault . Sean later got his job back and forgave Kelly . Despite these events , Kelly and Sean remained friends . In 2006 , Sean reunited with his ' father ' Brian Tully , who had left his mother for another woman when Sean was ten . On Father ' s Day 2006 , Brian revealed that he was not Sean ' s biological father , and that Sean ' s mother had in fact been having an affair with another man - a plumber called Paul Jones - who does not know that Sean exists . Sean was involved in a storyline with Violet Wilson and Jamie Baldwin , when Violet became convinced that Jamie was in love with Sean , only to find that Jamie was actually in love with his step - mum , Frankie Baldwin . In February 2007 , Michelle Connor introduced Sean to her new boyfriend , Sonny Dhillon . Sean recognised Sonny as a former boyfriend . Sean confronted Sonny about their past relationship . Later , they rekindled their affair , but were soon discovered by both Jamie Baldwin and Steve McDonald . Michelle ' s brothers , Liam and Paul , questioned Sean about Steve ' s claims and later forced him to admit the truth to Michelle , devastingly ending her betrothal to Sonny . Baby Dylan . In June 2007 , Sean decided to be a sperm donor to Violet . After visiting the hospital with Violet for her twelve - week scan , Sean got the number of the sonographer , Marcus Dent , and started a romance with him . They went through a rough patch when Sean tricked his boyfriend into revealing the sex of the baby , totally disrespecting Violet as she didn ' t want to know whilst Sean did . It was revealed that Violet was expecting a boy . Sean and Violet fell out due to the fact that Sean wanted to be the baby ' s father but Violet saw him as the sperm donor as they had originally agreed . Sean looked into legal advice about the situation but it was too expensive . He and Violet finally called a truce and Sean lent Violet and Jamie the money for a flat together . Unfortunately Violet and Jamie found Sean ' s attention suffocating and agreed to move down to London together for a fresh start as a family . However , Violet went into labour at the Rovers Return on 22nd February , whilst Jamie was moving their things down to London , so Sean had to stay for the birth of his son . When he was born , Sean shouted out that he was the first person his son had seen . He was then seen bonding with his son whilst Violet was in hospital , upsetting Jamie who planned to be his father . On 29th February , Jamie , Violet and Dylan left the Street but Violet ' s sister , Lauren , told Sean that they were leaving . Sean refused to believe that they were leaving forever and later blamed himself . Eventually he had tp admit they had gone for good . When Sean was jealous of Marcus staying with an ex in London , it became clear that it was time to move on . On 3rd September 2008 , at a party at Liam ' s , Sean fell for Tom Kerrigan . Sean asked Tom if he minded if he kissed him , Tom declined and Sean stormed off . Nevertheless , Sean and Marcus split a couple of days later . Searching for love . In July 2009 Sean fell for a gay man named Leon whilst attending Weatherfield Health & Fitness with Jason . Trying to impress Leon , Sean claimed that Jason was his boyfriend , and during a later session at the gym , feigned being upset claiming that Jason had " dumped " him in order to invoke sympathy . This backfired however , when Leon stated he wasn ' t interested in camp men , and later admitted to Sean that he was in love with Jason . Sean tried to tell Leon that Jason wasn ' t gay , but he refused to believe him . After Jason won " Mr Gay Weatherfield " while drunk , the pair were forced to admit to Leon that Jason was straight . A shocked Leon then reported Jason and had him disqualified from the competition . Sean decided to track down Dylan in 2010 , but worried that Violet would turn him away , sent a friend request on " Facescene " posing as Liz McDonald , although initially angry , Liz became sympathetic as Sean only wanted to find his son , so she contacted Violet who then sent Sean a request on his own account as well as photographs of a two - year old Dylan . Sean began visiting Dylan and Violet in London . On one visit on Easter Sunday in 2011 , Sean was surprised to find Marcus at Violet and Jamie ' s residence . As Marcus and Violet were both going through relationship troubles , the two men took Dylan out for the day , but upon returning saw Jamie departing in a cab , seemingly ending their relationship . A sympathetic Sean offered to look after Dylan for a while but Violet accused him of trying to steal her son , and told him that the Violet he once knew was now gone . Sean retaliated by accusing Violet of being homophobic and not wanting to pollute Dylan with his mannerisms . He subsequently left and returned home . Marcus later returned to Weatherfield and Sean reconciled their relationship . Over the summer they took care of Dylan after Violet ended up in hospital . In late 2012 , the relationship ended after Marcus discovered he had feelings for Maria Connor and got together with her , which left Sean single once again . During a night out at a gay bar in December 2014 , he met Billy Mayhew . Background information . The character of Sean Tully was introduced for a one - off basis in July 2003 . Ten months later he appeared for a further two episodes in April 2004 , before returning as a regular character four months later from August onward . Quotes . " Cheers mate , I didn ' t know you were coming . " ( First line , to Martin Platt )