How to get over a break up

Let me tell you, we haven't broken up yet. I believe that what you put out is what you get. Positive and negative energy is a thing and negative thoughts lead to negative actions. HOWEVER, I am not looking to get deeply hurt (I can't take that kind of pain). I worry to much an read into things too deeply. My boyfriend d has been sick and been acting sick. But also weird. This morning I text him twice and he took an hour to respond to one and left the other on read. So naturally, my worried self says he's pulling away. I don't want to be this person so, Basically, what I am asking for is confidence. I want to know my world won't come crashing down after a 10 month relationship. I love him deeply and I am moving in with him at the end of the month but again, I just want to be prepared for the worst while hoping for the best.

So give me some confidence!

Some things I have are like: He's not outwardly affectionate with his words, he rarely shows affection (holding hands, little kisses) in public, he plays video games too much, we don't have sex as much as I want, I could be a stripper if I wanted, I'd save a lot of money, I wouldn't have to take care of another person, or worry about someone else's opinion. What are some other things?!

(Again, I love this man with all my heart and I do my best everyday to be the best girlfriend. It's just the past few days something has been off and I feel like he has something to tell me but isn't. This might seem stupid to you but I need to be confident and not be so co dependent and that's why I'm thinking about this).