long post below, dont post reply without reading whole thing.
Me and my girlfriend have been going out for a while, her family like me (I think), they invite me to family events. Her sister was in a swimming competition, me and my gf thought it started at 1 when it started at 3 so we just stayed round the pool waiting for it to start. We were sitting round the edge till some nob pushed us in. We went to her house so she could change. Her mum insisted I put on one her tracksuit (almost-unisex), when her mum noticed wet patches forming round the tops of the legs. She suggested I put on a pair of my gf's knickers, I did it knowing it was the only way not to freeze my balls so I wasent a crossdresser. The reason I had to put on knickers was her dad walked out and she had no brothers so it was just her mum, her sister and her so they had no mens clothes in the house and mine was too far to walk to.
We went to the swimming, my clothes were dry and no metion since then. Then my gf started throwing water at me, I spoke to her about this and then she said she want to see me in knickers and proper girls clothes (such as a skirt). I said im not into that sort of thing, then she got angry and started calling me selfish and saying we always do my things and never hers.
She phoned up last night and said to me, "wear a dress and come shopping with me or we are done"
What should I do, should I dump her, should I say no, should I just do it or do something else?
keep annon because I dont know if her, her sister or any of her friends use this.