My boyfriend is well-endowed but I wouldn’t say porn star probs 7-8 inches something like that-

Anyway no matter:

How horny I am

How much lube we use

How slow he enters

How long we do foreplay

He tears me upon entering, it hurts obviously but I just get over it because once it’s in and all that, sex is great, especially in doggy style

My question is: Why does it always tear? It seems to be the, what I think is called, the Perinium? That bit of skin between the vaginal opening and the butthole,

Someone please help😂