I met an amazing guy last year. He was basically the man of my dreams. We spent a couple of days together, and then we parted - but we kept in close contact, and saw each other a few more times all over the world, as we both travel. We never officially entered a relationship, but we called each other boyfriend and girlfriend a few times. I however ended up going through a very traumatic bereavement and although he was my rock and really helped me, I did put a lot of pressure on us during this time.   One time I saw him, we ended up having a chat about us and he said he wasn't ready for a relationship yet - he said that he needed some time to get to a place where he is. So we agreed to just be friends - although we still went on holiday together after this where we certainly didn't act like just friends. I have anxiety problems and I realised that I did need to work on my self-love as well. So I decided to move abroad to work on that. We stayed in contact, but didn't see each other for 6 months. I was still very much in love with him, to the extent that I wasn't interested in any other guy and even told people I had a boyfriend. But I definitely did attract what has happened, because I was constantly worried about where he was, whether he was with other girls etc. I'd never voice these concerns onto him, but they played around my head constantly. I have anxiety and OCD which haven't helped matters. 
 I booked a flight out to see him, and am now at his. However, last week (before I got here) he said on the phone that he needed to be honest with me. He said he had been on a couple of dates with a girl, and that it is nothing serious but he needed to tell me straight away. I was actually so so grateful that he did tell me and I think that it really shows how decent he is. I also told him I loved him for the first time. I told him he didn't have to say it back, I didn't need him to say it back but I couldn't not tell him. He was quite taken aback and said he wasn't expecting that. He said he loves me as a friend and very deeply cares about me. But I also said that I do just want him to be happy and if his happiness is with someone else that's good for me.  The reason I am finding this tough is because we didn't cool things off because we didn't want to be together, we did so because we both needed to make ourselves happy before we could be in a happy relationship. We didn't talk about being together or not being together in the future really, we left it open-ended. Obviously, it's then difficult for me to hear that he's dating.  He still refers to this girl as his friend and has told me that it's nothing serious and that nothing physical has happened. But they have seen each other while I've been here (I left the apartment when she came over although he did say I didn't have to leave) and I notice him texting her sometimes and I'm really finding it hard to deal with. 

I do want to be with him, and I want to have what we used to have back. It's incredibly hard being with him and not being affectionate like we always have been, although I am still having fun being around him as he is still a very important person in my life. However, I do essentially want him to be happy, and I know that if he is meant to be with this girl then I am meant to be with someone else and we will both be happy. But I just can't shake this feeling that he's the one, it's been like magic when we're together and everything just fits. Knowing that my anxiety attracted this is the hardest thing. 

What are the best things I should be doing in this situation? I think I am still struggling with my self-worth, because I at times I am getting worries about me overstaying my welcome here. I'm doing my affirmations as much as possible, I'm trying my hardest to work on me and I'm not putting any pressure on him. I just don't know how I will leave this situation, what to say to him about our future, and how to not be sad when I see him texting this other girl. 

Does anyone have any pointers?