so i have been dating this girl for almost a year.. we have had this problem pretty much the entire time... i ALWAYS go down on her EVERY time we have sex... always... i always make her cum first... and continue to kiss her like she told me she likes.... i always make out with her before i go down on her, and feel on her and kiss her neck and her ear.... and you can tell she loves it... she gets wet... i also use a vibrator on her to get her off while i am going down... she loves it and after she cums i give her a few minutes to recover before i go in... im decent size.... 7.25 x 5.5 so i don't think that is any problem... once i get it in its really wet... and everything is good... i go slow... kiss her... tell her how gorgeous she is... then start pounding away... i do alot of kegel excersizes and pe exercises... so i pretty much have control of when i want to cum... so i can go fast and hard for a while without feeling the need to slow down... and she loves it.. but about 5 or 10 min into it... she starts getting dry.... and i get some spit... and rub it on my dick and get it wet again... and then go back at it for a min... till she is dry again... then i break out the astro glide lube... and lube it up... and she still gets dry after a few minutes.. i don't know what else "I" can do... its getting pretty rediculous.. i think it may be cause we use condoms... but i dunno.. i ask her if she is just not in the mood and she says no she is... it feels really good.... i asked her one night after we were done and just laying there together.. i said what do you think the problem is.. and she just started crying saying she doesn;t know... and she has had this prob before with other guys and she doesn;t know if its just that she gets so worried that it makes her dry... i told her its not a big deal.. and thats what lube is for... but it is seriously getting rediculous.. i havn;t told her that but i just need some help... anything