I'm in love with my friend??

I recently became a thing with my friend who is transgender and I'm a cis female (it doesn't matter I'm just being specific). I have liked him for almost all of our friendship and he recently said he liked me back and we started being a "thing" about three weeks ago and I can't tell if he really likes me or is just trying to. We say I love you because we did when we were just friends and it would be awkward to just stop saying it, but I can't tell if he really likes me. Also we can't really tell anybody about us because his mom will find out and we won't be able to have sleep overs anymore. He recently got in trouble in school and can't go anymore and all of his phone activity will be monitored and I can only talk to him every other day because he doesn't have his phone. I don't know what to do. I really care about him and he makes me happy but I don't know if I'm that person for him that he is for me. It would be great if somebody could give me advice