<human>: So I'm 22 years old and I've never had a girlfriend or a serious relationship. Having said this, I've had ample experience with women and the closest thing I've had to a relationship was 'seeing' someone casually on and off across a period of 9 months (I say 'seeing' because we never spoke about what we were and it was kept very casual with no commitments). I've had girls who have told me they wanted something long term thing from me, but I decided against it because I basically didn't like them enough to make such a commitment (I'm very picky).

Anyway, I've been on a few dates and slept with this girl and it's been going great so far. We have a lot of chemistry, similar interests and motivations etc. She is the first girl that I could see myself actually committing to a long term relationship with. 

Since it's still in the early stages this topic hasn't come up yet. I'm wondering what she's going to think of it when it eventually does and whether it's going to be a dealbreaker for her (she's a girl who's been in relationships regularly since she was 17 and is the same age as me). How should I approach this? I don't want to scare her away through my lack of relationship experience...

Can you condense the text into three sentences or less?
<bot>: I've never had a serious girlfriend, girl I'm dating has had a lot of relationship experience. How should I approach this topic to not scare her away?