Question for red pill guys who have slept with a lot of women.

Basically I have major insecurity, largely stemming from watching porn. My penis is an average size, 5 inch girth. My question is about the effect of larger penises on vaginas. Basically I'm very insecure about a girl feeling "looser" to me if she has been with a thicker guy than me.

Let's say I was with a girl. I was her first and only sexual partner. We break up - she then starts seeing a guy who let's say has 5.5 inch girth. We eventually end up getting back together - will she feel looser to me (even slightly) than before she slept with the bigger guy?

By the same token, have average sized guys here slept with slutty girls and still found them to be "tight"?

I'm looking to find out whether a girl can still be as tight as ever, even if she has slept with big dudes. It's ruining sex for me at the minute. I even struggle to stay hard during sex sometimes, thinking that a girl is looser than she could otherwise have been. I'd really appreciate it if people could share their personal experiences, hopefully dispelling this as a myth. I know the textbooks will say nothing will change down there, but I'd like to hear it firsthand from guys with average sized peckers (i.e. like me). If someone is big, I'd imagine girls would naturally feel tighter to them for example.

tl:dr have you slept with girls (who have been with bigger guys than you) and still found them as "tight" as a girl who hadn't been with bigger guys, e.g. someone whose virginity you took.