Am I overacting over my lover....

My lover M43 of 10years gave me F43 Oral sex and kisses me for the first time on New years since we've been messing around. Idk 🤷‍♀️ what this means and now all of a sudden he expresses how much he loves me, but his actions says different. We only have sex and we do nothing else. We don't go out, I don't know his family and he doesn't knows mine. We argue alot but we like each other for some weird reason 🥺. We did 69 for the first time and it was amazing but idk what's happening he's so confusing.