Every single time I open myself up to someone, get attached, and then they pull away in some way for no apparent reason. 

I've been particularly guarded because of that and this year I decided to just let go and let people in. I let a co-worker in and we became really really close. However, recently, she stopped texting as much as she used to and is overall just not herself with me over text. It really gets to me because I feel like I did something wrong, yet she's normal with me at work. 

This  weekend, I texted her on our work group chat (it's me, her and another co-worker on it) and she stopped responding after a while. I texted again to say I hope the weekend is going well and that I miss her, and I didn't get a response, yet she read it. I feel really disheartened because I let someone in, and once again, they're pulling away.  Should I ask her about not being herself over text? 


I realise this is probably me being needy, but I don't know what to do or where to start in terms of not being this way. It makes me feel more suicidal and I feel like it's easier to just end it than deal with trying to fix myself. 