What if a guy suddenly starts texting more and puts kisses at the end of each text even though I don't know him that well? What if he asks me out for a coffee? Or asks me to go to see a movie with him? In person he's not flirty at all though he does hang around me an awful lot & smiles quite often for no reason. I don't want to ask him and look like an idiot if I'm wrong.
It depends... If you wonder if he considers you good friends, then ask, however if he invites you out for a drink or coffee, just the two of you... It's most likely a date.