You sound like you are in the same situation my sister was in with my brother-in-law when they first started going out and he was always doing romantic over the top gestures for her until she talked to him about it and got him to tone it down a little and I think you should do the same thing. They have been together for over 15 years now and she is 38 (although, she is always changing her age which I am guilty of doing too ) and he still does some romantic things for her and is infatuated with her and so he should be because my sister is an amazing woman and he is lucky to be married to her.