<human>: My relationship with my ex (M32) ended suddenly. He disappeared for 2 weeks without any contact, and one day sent me a text telling me to give him time. No explanation. It broke my heart and I couldn't eat or sleep for weeks not knowing why he had left. I loved him so deeply, it was crazy. I gave him 2 more weeks, and then he suddenly wanted to talk. I told him to leave me alone, I was so angry and broken. This was a few months ago and we haven't talked since. I couldn't get myself to even listen to a man who suddenly leaves our life and disappears for a month with no explanation, despite I know he could easily reach me. 

Now I've started talking to another man (M27) online, we've connected pretty well and want to meet up in a few months (he lives 3 hours away by plane). He knows about my ex and I told him I'd never talk to my ex again. The problem is, I think I need closure from my ex before starting anything new. I can't stop thinking about why he left, what I did wrong, what if I do it again and I lose another man too. So I want to talk to my ex and learn why he left, then maybe I can move on and stop obsessing about it. 

Right now, I don't feel like I can trust anyone, and I'm constantly scared people will leave me. However, the man I'm talking to online made it clear he doesn't want to get involved if I talk to my ex again, and he doesn't want to meet up if that's my decision. I really think we'd hit it off in real life, so this makes me sad. But at the same time, I don't want to lie to him. What am I gonna do? I need closure, but don't want to lose the guy.

Can you condense the text into three sentences or less?
<bot>: Ex disappeared for a month with no explanation, I want to move on, but can't stop obsessing and wondering why he left and it's ruining my future relationship.