I am not unaware that you consider your sexuality a big part of who you are. In fact, if you were to leave it behind and turn to Christ, you will likely lose friends who are very dear to you. But please consider this: What you do now has eternal consequences. You cannot hold onto your sin and simultaneously hold fast to Christ. There will come a point at which you must give an account for your actions, and unless you are found united to Christ, you will be cast into hell, far from the presence of God. And for all you know, the next time you set your head down on your pillow, it may not come back up. The Bible says, "It is appointed for man to die once, and after that comes judgement" (Hebrews 9:27). Now is the time to make your peace with God, for you are not promised tomorrow.
Yet, I do not plead with you to repent simply for the sake of escaping judgment, but also because I have tasted and seen that the Lord is good! I have realized that all the former things which I thought defined me were not truly sufficient to satisfy my soul. Those things with which you identify are fleeting. They are like water vapor, here for a moment then gone. But in Christ, there is everlasting joy and pleasures forevermore (Psalm 16:11). In him there is love that never ends, and life that never passes away. So I plead with you, leave your current ways of rebellion against your Creator, and find in him your true identity, as a bearer of his image and beloved son or daughter with whom he is well pleased.