What romantic idea can I do for my girlfriend?

I am sorry to say but truth be told if you are fighing romantic gestures will just make her upset. Chances are you are fighting because she cannot see you as a leader.When women see guys as leaders they feel loved and are very attracted to them. But when they see them as their followers ( not making descions and leading) they get upset and feel unloved. They fight all the time with them because the women feel they have to lead the men and it makes them upset and irritated. Show her you can lead and when she see's this then the fighting will stop and then you can do something romantic for her. If you don't show her you are a laeder and have leadership skills doing something romantic ( flowers etc) will just make her more upset and you guys fight more. Tease her flirt with her. Tell her things like " You know you are pretty cool for a girl" She will love this!! It means you love her and are joking with her. Men who flirt and joke with their girlfriend's are seen as leaders by their girlfriends. Girl's love flirty banter!!! Best of Luck to you! Tickling is also seen as flirty banter.

Do things that she likes to do, that you normally don't like to do. The best way to prove someone that you love them/care for them, is to put aside your wants/needs/desires briefly and serve someone else. For example: If she enjoys romantic movies, take the time to sit down with her and watch a romantic movie with her. Don't complain or roll your eyes or scoff - no matter how painful - and do it for her. It doesn't have to be limited to a movie, though. Just do something for her that would mean the world to her. Sit down and make a list of things she enjoys and go from there :)

I suggest suprising her with flowers and a stuffed teddy bear. Then make her dinner. Tell her how much you love her and constantly tell her she is beautiful. Then maybe go for a walk. Watch a movie at home together so yous can cuddle. Remember that its always the little things that mean the most.