Is he the right one?

My online bf broke up for the second time now, but I rlly think he is the right one we r just struggling a bit. Bc when I’m with him I have the best days of my life. Without him, nothing is fun. He broke up bc I thought he was cheating. I joined him in a Roblox server, n I saw the chat. He said “do u want milk”. I texted him without thinking. I said tht to hes irl bestie who is a Boy.

He got sad tht I thought he was cheating so he broke up. U think it’s my fault. But what do y’all think, is he the right one?