If you are lead by the Spirit, you will not fulfill the lusts of the flesh.
The flesh is powerful, even though it is dead. It can cause you to seem to go to sleep about what you are doing, and when you wake up, it is already done. Now Jesus is just and righteous, and He forgives us all of our sins, but things are possible which we can and will regret for a long time. The only proof against falling under the power of the flesh and its lusts is the Spirit. If you know Jesus, if He has come into your heart to live with and in you, then you can trust Him to guide you, and to let you know when you are in danger. If it seems to you that it is wrong, that it is dangerous, then it is, and you should reject that activity.
He truly loves us and wants us to be happy, full of joy and peace. I can tell you now that the things that the flesh wants to do do not lead to joy and peace and happiness. They lead to misery and sorrow and pain.
My prayers for you in His love,
vic