<human>: Could you distill the essence of the text into 1-3 sentences?

When I first started high school I started dating this girl and we really hit it off.  Like really really hit it off.  In fact, we dated all through high school and most of the way through college.  However, after about 7 years that girl cheated on me and left right out of the blue.  One night her stuff was in my apartment and everything was fine, the next night it was in her new boyfriends apartment and everything was done.  I was devastated, but eventually after some time past I moved on.  Or so I thought.  I have gone out with a few different girls since then, each ending disastrously.  The highlight reel includes one getting arrested mid date, and the other hooking up with a friend of mine at a party.  After this crazy string of bad luck I decided to just give it up for a while.  I'm a nice, smart, attractive guy, and I know that eventually I'll find somebody.  I'm really not trying to force anything.  However, I met a girl about a month and a half ago and we've been going out ever since.  She is truly amazing and I'm really into her.  She recently invited me over to her house and we started getting down to business (for the first time.)  However, things didn't exactly function as intended on my end.  I explained to her that I've had some pretty shitty luck in the past and getting into a sexual relationship with somebody that I actually care about is a pretty scary thing for me.  I seriously expected her to bolt after a night like that, but she was actually really cool about it.  She seems to understand and is willing to take things slow.  Everything has been working fine for me in the downtown area with other women who I've met at parties or one night stands.  I think I'm just afraid of actually caring about somebody again.  Have any of you guys experienced anything similar?  Any advice on how I can get out of my own head?
<bot>: Long term relationship ended suddenly when I was cheated on.  I haven't seriously dated since then.  Now my peeps on the fritz with a girl who I really like because I'm scared of being in a relationship.