Should I call him? ?

We’ve been casually dating for 6 months. We are pretty close friends and text daily. Talk 1-2 times a week and see each other when we can, usually once every week to week and a half. We are pretty involved in each other’s lives as far as talking and givin advice. I have developed deeper feeling for him. He knew why I was coming over to talk and we arranged a time. I told him I feel something good between us and he said yes he agrees. I said I don’t need a relationship that day, but I’d like to know if he feels the same. He said he likes me and is comfortable with me, but he doesn’t know what he wants. Said some days he feels like he wants a relationship, but some days he doesn’t and enjoys being alone ( he has always been like this since I’ve known him) I told him I can’t keep investing in something that both people aren’t on board with the same plan. He said there is a possibility of a relationship with us in the future. He got quiet and said he guesses he has some things to think about. I said no, you already know what you want and what you don’t. He again said he needs to think. I left soon after. No big scene. I left him sitting on the couch and I walked out. That was Friday and I haven’t heard from him. I’m missing him a lot as a friend and more. How long should I give him to “think” and should I contact him or wait on him? Thanks for replies