As long as you make sure they enjoy what is happening and don't force them or get angry with them if they misunderstand what you want of them, they will love you always. Once you have succesfully fucked a filly a few times she will be used to it and look forward to your visits so long as you give her the attention she desires. You must experiment and treat her as a lover and see what turns her on. Treat her as she wants and she will give you all. The Stallion A stallion is is one of the most proudest, powerful, masculine, things there is.
All stallions are very oral and like to nibble and bite on anything available.
This can be annoying and painful and they should be trained against it at a early age or else you should wear a padded suit, so that they can bite you painlessly. This might be considered as a horse that allows itself to be bitten without reacting is signalling that it is sexually receptive. Stallions that have succesfully coupled in the wild are somewhat resistant from seduction by humans. If they are isolated, tempted and trained, then they will become more acquiessent but the best ones are those that have been raised in a human enviroment since weaning, since they have not had sex with other horses they are more amenable to having sex with humans when their hormones kick in and they are looking for some release. Bringing a wild horse to orgasm can be more difficult.