It will be ok.

Do love her? Do you love him? Even after what they did, be it as severe as having sex with someone else, down to just talking flirtatiously. Its worth it. I had a problem just recently with the love of my life, and she didnt cheat on my by having sex, but just being close to someone, and not telling me, and then it went to something more. I love this girl, with everything i have, and she is a good person, so its worth it. It happened, your both going to have problems with it, but if you love each other, it will be ok.