Dear everyone,

I'm new here so bare with me please.
I've been trying to get a certain someone back for some time now. We ended contact in November, and on the third day of Veronica's challenge, after two months of not speaking to each other, he contacted me (that was in January).
We kept in touch for a few week (I never initiated contact) and finally he asked if he could come and see me. He came, we hang out for a while and then he left. Again, despite how much I wanted to see him, I didn't initiate contact. 2weeks went by and I heard nothing. I was getting really sad and back to my old way so I decided to email Veronica. She was so nice to email me back and she told me that the universe delivers a little at a time so that gave me hope to keep going. Since then, I've seen him a couple of time (we hade sex once). When we are together, it's wonderful. He even told me that he had really missed me and loves me dearly a couple of times (after months of fighting and not hearing that from him, it meant a lot) and it felt so sincere that I believed him! I was on cloud 9 the whole time and my faith kept growing that this would work.
we were supposed to meet up last week but I haven't heard from him since then. I texted him on Friday saying that I was a little disappointed that he hadn't set up a date for that week like he'd promised me but didn't get a response. I know he usually doesn't respond to these kind of messages to avoid fighting (I used to make a huge deal out of everything!)
Still, I'm wondering what happened all the sudden? What am I doing wrong? I've the feeling that I'm falling back to my old habits and that I'm screwing this up. Should I give up?
Please help me with some honest advice. I've though of giving up a lot of times, I tried dating other guys or just going on with my life knowing that he won't be a part of it, but each time I realize that I love him dearly and that I have to do everything I can to make this work. This is not the first time that I've been in love but despite all the challenges, he is still the one I want.
Is there ever a time to give up?
Thank you sooo much in advance for you help and advice.