Justin Bieber says you shouldn't have sex until you are ''in love''.

The 'Boyfriend' singer - who has been in a relationship with Selena Gomez since 2011 - doesn't want his fans to rush into the bedroom and thinks it is better to wait until you meet the right person.

Speaking to Rolling Stone magazine, he said: ''I don't think you should have sex with anyone unless you love them. I think you should just wait for the person you're ... in love with.''

In the revealing feature, Justin also reveals he is morally against abortion, although he accepts there are occasions when a termination is the right thing to do.

He said: ''I really don't believe in abortion. I think (an embryo) is a human. It's like killing a baby.''

When asked if he thought abortion was acceptable in rape cases, he replied: ''Um. Well, I think that's really sad, but everything happens for a reason. I don't know how that would be a reason. I guess I haven't been in that position, so I wouldn't be able to judge that.''

Justin also revealed he feels like more of a man since he turned 18 in March and the way he acts and behaves has become more mature.

He said: ''I feel like I carry myself in a more manly way. I don't carry myself as a boy.''