So i'm in a relationship with this amazing girl for almost 4 months, i'm 19 and shes 18. anyways we were both virgins going into this and we shared a special moment about a month ago and experienced sex for the first time. well since then with the help of her mixing it up and changing for example like role playing and things of that matter. i keep a boner for a quite a while. she's on birth control and i'm using a condom. whenever it comes to experience love again everything that we had worked on fades away and thats it. i'm curious to know if there is something that i can use to help blood flow to my penis. my size and all that is average but i want to show her how much i love her in a differnet way. do you have any suggestions for supplements i can take