It's not just you man. I'm going through a time in my life where it seems that every time I start to connect with a girl, she's over it the next day. Three examples come to mind in the past six months. First, was a girl I met on tinder. She laughed at my pick up line, we started talking, turns out we had a bunch in common, she was just the type of girl I was looking for, I ended up getting her number and I was pretty blown away that this could happen online. Fast forward a few weeks of talking/ flirting. I ask her to hang out and she literally never speaks to me again. I messaged her on snap chat a couple months later asking about it, watched her open it a minute later, and never respond. The second girl I went to high school with. She was a friend of a friend, so I never really got to talk to her, but I thought she was insanely attractive. At the time, she had a pretty serious boyfriend so I made no advances and neither did she, but she would always make harmless comments on my pictures on social media and message me asking inane questions. A year after I graduated, she commented on one of my pictures again but this one was explicitly flirty. she then messages me and we begin to talk for a few weeks, go on a few dates and have, what seemed to me, like a good time. Then one day, she flakes on plans we had made. No biggie, but she literally stopped texting me an hour before we were suppose to meet up, and doesn't text me back or tell me why till the next day. Her excuse was that she has days where she just shuts down and can't deal with anything(what?). Didn't apologize for flaking or try to reschedule. From then on, texts were sporadic and lacked substance. I asked her repeatedly if she wanted to end it or if I legitimately had a chance with her an she kept giving me answers like 'I really like you but it's complicated right now'. Then one day, she tells me we're not compatible and that is not going to work. Doesn't speak to me ever again. Last but not least, my 'first love'. This one takes place over the course of about four years.she was my first real relationship, I lost my virginity to her, and we remained good friends after breaking up so this was the worst one for me. She knew that I would never entirely lose feelings for her so I definitely feel led on here. But to make a long story short, we went from dating, to friends, to friends with benefits, back to friends and then drifted apart for a year or so while we went on with our lives. Anyway, we ended up reconnecting and talking a bunch just like old times. It made me happy, she was a part of my youth after all. Anyways time comes to meet up, and she flakes without explanation. I find out later it's because she was painting her room(odd task to take on when you supposedly had plans). She apologized for flaking on and ignoring me, no big deal. Talk for a while more she says she's busy with schooling and will absolutely have time for me next week after she graduates, meanwhile posting snapchats of going to parties and stuff but whatever. The texts became more and more sporadic, and the day she graduated, she disappears. I never got I talk to her again. Sorry for the novel. I just felt you might feel better knowing its not your fault. Feel free to message me if you want to talk about it more man, God knows we both need it.

TL;DR: people(girls too) are shitty in general