The verification code is there to ensure that people don't dump fifty metric tons of bullshit on the site all at one time. I haven't been having any problems with it but maybe it's different on your end.
As for your lady, I think as long as she's honest with you about how she fucks around and how she doesn't mind if you do too, there's no problem there. The only question is whether you're comfortable with that arrangement. If you're not, just tell her and walk out the door. There's always another woman, it is really not that hard to find them.
No, the real problem is when a girl is all fucking clingy and swears she was waiting for you while you were overseas for a year and wants you not to go back even though you have to, and yet one goddamn month earlier she was talking to you on skype about the cute Moroccan guy she met at college and how great he is. Good riddance, though, I didn't like her anyway. I think she has some kind of emotional problem, but I don't care. She's an adult, she can take care of that on her own.