its a long story, but my gf of 4 years has been upset about her weight and thus very unhappy with her body. dealing with her issue is a whole nother thing which i dont want to get into really in this thread at the moment. i just need some help. because of her unhappiness with her body, we have sex maybe once every 5 months, which is really hard for me. ive become recently friends with a girl i work with who is kinda flirty with me at work, but she knows i have a gf and knows i wouldnt ever cheat on her. this girl (who is incredibly attractive) has told me that she had a sex dream about me one day at work, so here and there we tease and joke about that, but its always friendly and doesnt cross the line. last nite after work we were sitting there talking and i was tellin her about my problems and things, so before i left she gave me her number saying that if i ever need to talk to someone to call her. today she texted me just asking how im feeling today and normal friendly stuff basically. then she started joking sayin shes gettin in the tub and that i should come by. so, feeling sexually frustrated from having sex twice a year roughly, i started to mess around back saying flirty stuff. eventually i brought up that if i were single id say a lot more but i cant now. we said some sexual things but nothing in stone that i was actually ever going to do anything with her, just teasing around. for some reason though, i feel extremely guilty that i texted flirty things to her behind my gf's back, and because of the guilt i took a massive amount of painkillers to numb myself out to the point that i thought i was going to nod off completely (yes i have a drug problem, but thats a whole nother thing as well.) all im asking is, given my situation of being deprived of sexual activity for so long and only watching porn, how guilty should i feel? i hate myself for it but i feel so alone anymore. im sorry this was so long but i needed to explain everything./ please respond it would be greatly appreciated. thanks guys.