ive been trying to paint my gf's face lately so ive been holding off sex for 2 days, drinking alot of water and edging but when it comes time to cum I dont get all the cum out. there is a good amount that comes out. say about 1-2tbs. but then we go again like 5 min later and when i cum the second time its the same amount if not more. our sex sessions last 30 usually more so i have time to let it build but i cant get it all out the first time.