Confused about GAY relationship + Mental Issues interfering.

First & Foremost,

I am male. 16yrs of age.

S/O is male, 17yrs of age.

Recently, someone asked me out and I have never thought to put myself out there. Especially since recently I have only started to be more open about my sexuality. I never considered dating at all because of my mental healthcare and such. With seeing someone of the same sex as me, its all just so new to me and I have no idea how to go about this. They’ve dated other guys as well as women but i’ve never been committed to some truly. We talk n such about how our day went but, I feel like I am the person in this relationship holding us back. I said yes to giving this thing a try but I just don’t know how to go about this and it’s confusing me sm. He’s understanding about how I sort of feel about dating a guy for the first time. Knows I am adjusting and we’ve had a small conversation about it. Its just I don’t know if I am honestly ready for this because I don’t think my heart is in it yet. I am a very mentally unstable person but I keep it together as much as possible especially around other people. I am how you say, a romantic person interested in sweet romantic gestures. He see’s a real part of me that no one has noticed nor have I really showed to anyone. This relationship is confusing me because I’ve never been taught how to commit to a relationship. Nor am I mentally stable for it but in my heart I know I do want to give this relationship a try. Yet my mentality is such a big burden its very hard to keep it together. My parent’s don’t know and are not aware of my situation at all. Since I’ve never discussed any of my personal issues with them, because they are my personal issues. I just don’t know how to go about this because a lot is happening lately….