I'm sorry, PerfectlyImperfect...
Do you have an older Christian you can confide in about these things in person? I understand the desire to seek prayer anonymously on this website, but really it can't be a replacement for opening your heart in person to another Believer. I know it's harder, but it's very important. If someone close to you knows your struggle, it can help to serve as one more reason to say no to the temptations.
I guess in other words, if it seems possible to get away with things like this without hurting anyone (which is a lie straight from Satan, because it always will hurt someone, eventually, even if it's years later) then create a situation for yourself in which giving into temptations
will hurt someone you love. If you have failed again, it will also break the heart of the person you are accountable to. It sounds backwards, but it does help.
I'm also curious how you ended up in a situation where kissing this girl was possible? Is it someone the Holy Spirit has been nudging you to avoid? Have you listened to Him? Obviously, the other girl was open to it, too, so something should have given you a clue that you shouldn't have been alone with her (if you were).
You've already sought forgiveness and confessed to God your sin. So, learn from it (make changes if need be) and let the mercy of God fill you with joy again. He saw what You did before you were even born and forgave it on the cross. Your battle (literally) with same-sex attraction has already been won from His perspective.
This doesn't mean you won't mess up again. In fact, it's safe to say you will. And
don't be okay with that. But never let your sin, no matter how bad, separate you from Jesus. Satan loves to use guilt to pull us away from Him, too.
I recently read a book called "Worn Out By Obedience: Recovering from Spiritual Fatigue" by Ron Moore. Maybe you'd find it helpful. It's about feeling battle weary and how Satan can use weariness to lead us away from God. It also gives some points about how to withstand and recover from the weariness without giving in to Satan's tricks.
I don't know the author or anything, but I bought it on a whim and found it applied very well to where I am in my own faith. Though, I'm more on the side of finally recovering from spiritual fatigue.