Age gap

Chat I don’t know what to do. Okay so I (21f) have been chatting to this girl (18f) and we’ve been really getting along and getting to know each other. I’m really scared to tell my friends her age as I’m afraid they are gonna think I’m weird. She turns 19 in 2 months and I’ve just got out of a long term relationship so it’s not gonna go anywhere serious but I just don’t know if I’m overthinking this or not. Please tell me the truth!

Edited: just to make this clear - I’ve had a few comments about drinking age, where I’m from the drinking age is 18. Also thank you all for the helpful comments this is really putting my mind at ease but I do think now it’s something over brought up it will just overshadow the situationship and I don’t want that to happen Thanks everyone x