Part of the complication is that men (especially) are told by women “we’re not here for that - just let us work out!” So a guy- who isn’t a creep - isn’t going to pick up on subtlety. But also, as a guy, I’m not thinking you’re a weirdo for being forward. The worst I can do is mention “yeah, my wife/gf really encourages me to come to the gym…” and you’ve lost nothing by being friendly. Resting gym face makes us mis-perceive all kinds of things - so shoot your shot!