Two Questions In One: Rhinoplasty And Relationships (help)?

For the first one
Rhinoplasty:
I just moved to the states not too long ago, and Ive had a deviated septum that Ive wanted to get fixed. Not only because im involved in running and dance, but it also just doesnt look good.
How much would that be in the us (in dollars and in euro’s)
Okay, relationship problems.
I am not a lesbian, but im dating a girl right now (please dont give me any lip about your god considering that a sin, because i think everyone deserves to be happy)
Well, today, me and an ex where talking online and it got a little steamy. Actually, really steamy.
I dont know what to do, because i dont want to become a cheater, but I think i may still have feelings for my ex (and my girlfriend and I havent seen eachother in about a month.. its an almost nnexistant relationship, but I dont want to hurt her feelings…)
if you can answer both with respect
then you’ll most likely get best answer.