Search Results: ex boyfriend keeps calling

Okay so. This is my first serious relationship and I have anxiety so let me just say that I really don’t know what I’m doing sometimes.
But basically, my boyfriend last week asked for space, and because I’ve never had a long relationship space scares me. We weren’t supposed to talk for a week, but there were times when I did, and then when I was giving space, he spoke to me, which gave me the okay to initiate conversation.
He has depression, w/mood swings. On Sat. night/Sun. morning he was blacked out drunk, kept calling to say he loved me, that we’d work it out, etc.
Monday comes, says he loves me and wants a future with me. I was saying to him about how certain things can’t happen, when he has anxiety attacks he says things to me that aren’t okay, and he got mad, so I gave him space and BOOM. his ex says hi. And then he cut the cord with me. We’ve had issues with her before so my anxiety flared and I texted too much. And then last night he told me that he loves me but isn’t in love with me, and he said that this changed because I annoyed him in the last week. He said he’d give me a chance to calm down but that he didn’t promise anything. I know he likes her too, he told me and I’m thinking this is a big factor.
Last night I decided to take the high road and texted her “hey, I just wanna say I’m happy you’re in his life and if you have feelings for him tell him because if he has to be happy with someone it should be someone that understands, etc.” because no matter how jealous I am I’m truly glad. He’s missed her, and he never had closure and maybe that’s what he needs. She told me that she actually doesn’t have feelings for him and just wants to be his friend, etc. I haven’t told him yet.
i know the remedy for being clingy is just leaving him alone a while, but he asked me last night to go help him with something important for school, so how do I give him space moving forward and give him back feelings? And does he really not love me b/c I’m clingy or b/c of her?