He is the son of former Romania rugby union international Viorel Morariu and Cornelia Timoșanu a former volleyball player for Romania, which finished second at the 1956 FIVB Volleyball World Championship in France. Octavian Morariu played as a Number Eight for Rugby Club Grivița Roșie as a youth and also for Barbarians. Morariu gathered 2 caps for Romania, from 1984 to 1985 without scoring.