Why would you text anyone that you had a sex dream about them? I get this is smut but that's fairly implausible unless it's his character to be reckless and not care about others thinking he's a creep?
This is... I don't mind smut (in fact, I'm more than fine with it) but at least give me a fully fleshed out, no-random-bullshit, and realistic (in a characteristic sense) route to get there.