I’m his first love but he’s not mine

So my boyfriend is a year older than me, he’s a college jr and I’m a college sophomore (21 and 19 atm which I make fun of him for bc I’m still a teen lol)

He has never had a real gf, I was his first real Valentine’s Day and the first girl he’s said I love you too besides his mom and gma hahaha

I, on the other hand, had one other boyfriend, but for 15 months, jr-sr year of high school, so I’ve done the relationship thing before and know some stuff but it’s been a while

He doesn’t know “stuff” and he’s learning and it’s not his fault, but its been so long since I was in that state i don’t rember what needs to be like learned and I wanna help him but Idek what is like the stuff

It’s like one weekend we spent the whole time together and he played video games without me so much and it was happening other times too and finally I said something about it, and he felt really bad and said idk what to do I’ve never really had to figure out how to have a gf and friends before cause I haven’t had a serious one before you

Also I don’t remember the whole first love thing anymore, so as great as he is and how much I love him, like I forgot about like the one month anniversary thing, he was so excited and we did dinner but I was like crap he can’t know I need to rain check these other people bc I didn’t really think much of it

I hope this made sense

Please help, I wanna be able to help him and I wanna be reminded what do I need to know as a first love 💕