CONFUSED ABOUT MY SEXUALITY

I’m 16 and Iv only ever dated boys. I was in a relationship with a boy for nearly 3 years and we did almost everything sexual. However I have always found girls attractive, mostly ‘butch’ and ‘masculine’ girls, but i have found myself to look at the more feminine girls and feeling attracted towards them. In the last month I have found myself talking to a trans boy who hasnt had any surgery or hormone therapy yet, so he still has the parts of a female. He is very masculine but i find myself to be attracted to his female features and im very confused. I dont know wether this is TMI or anything, but I stayed in his last weekend and the weekend before in which he has fingered me and i have also kissed him but nothing further than that yet. I am willing to go further as when i kiss him i feel things i haven’t felt before in a good sort of way, might that have anything to do with my sexuality??? Plus after this sexual encounter with him, I haven’t been able to find boys as attractive anymore, i feel like i look at them and think “they are good looking” other than “they are hot” and the thought of a penis sort of makes me uncomfortable whereas this time last month it wouldnt! im so confused