Guy says "love you" when I'm in a relationship!

So I'm a dancer and so is this guy right but I've been in a relationship with my boyfriend for 8 months now and this guy who's in my dance group liked me and then my love came along and this guy blocked him on everything when my boy didn't do anything, but recently we're on a dance trip with a whole group and he came into my room and tried to hug me and said "love you (insert name)" 
Is this wrong of him when he knows I'm in a relationship?