I 18F cant forget about him 19M

I 18F and him 19M started talking about a month ago, it was going really well until he started being kinda weird about everything. Saying kinda odd stuff and not really replying as much? After this started happening we got into a bit of an argument (over text) about the weird things he was saying and doing, so I actually ended up blocking him. He’s been blocked for about a week. But the thing is, I can’t stop thinking about him and I kinda feel bad that I blocked him? (which is odd for me) I really can’t decide if I should add him back and start talking to him again or just let it go and try forget about him. I feel like It would be pretty annoying to get blocked and then they just add you back after a week but Im seriously on edge about this and I really need some advice about this!!!