<human>: First time posting here, so I'm not entirely sure how this works, but thanks in advance for whatever help is given to me!

Most of the relationships I've been in over the past few years have been troubling for me, most of them ending in "I don't think I'm really ready for a relationship right now". Which still to this day baffles me, because if that was the case then why would you open yourself up to a relationship in the first place? And then almost immediately after these relationships end, the person I'm with turns around and gets together with someone else and has a seemingly wonderful relationship.

But more to the point, like I said I've gotten this response from more than one girl over the course of my last few attempts at a relationship. I don't know if it's something I'm continuing to screw up in my relationships or if I just consistently end up as a transitional boyfriend/hookup. If anyone has had similar experiences and could offer any advice, that'd be great. Thanks!

Can you condense the text into a few key points?
<bot>: Consistent relationships ended by girlfriends because "I'm just not ready for a relationship". Not sure if it's something I'm screwing up or what. Advice from anyone with similar experience would be awesome!