<human>: This is my first post to this subreddit and this is a throwaway. 

I recently started dating this guy and at first he was okay, really nice and stuff. But then later into the relationship, he used to give me ultimatums like 'do x or I'm leaving'. The 'x' bit would be something like 'tell me what I want to hear'. But he used to do it really late at night and, knowing I constantly have a guilty conscience, would do it just before I wanted to sleep. Like I'd tell him I'd be going to sleep then the questions would start. 

He'd also do this with bedroom things as well. If I didn't want to do anything like that, he'd just get dressed and say 'right I'm leaving' until I'd agree to it and then he'd be upset that I wasn't 'into it'. 

He started getting really possessive too. Like he's being asking me about who I'm seeing and that he's not happy that I'm speaking to some past friends with benefits of mine. He hasn't mentioned it since. 

Truth is, I think this is souring and I'm scared to leave him because I don't know what he's going to do if I leave. He's out the country right now but he's gone for a long time- he made me promise I wouldn't leave him while he's gone on his business trip. 

Please help?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: I want to leave boyfriend who gives ultimatums and guilt trips me but I'm scared about what he's going to do.