Is it just me, or is virginity a really blurry definition?

First off, society says it's something you "lose", like you just happened to misplace it at the library or cafeteria one day. It's such an odd phrase imo, and I much prefer saying that I "shared" my piv (penis in vagina) virginity with the guy I did.

But then again, what exactly is virginity? I think it's a term that means different things to different people. For example, I've met Christian girls who gave their boyfriends tons of blowjobs, titty fucks, and anal...but they still considered themselves virgins because they never had piv sex. A pastor I knew said that lesbian marriages were "not valid" because there was no way for two women to sexually consummate their wedding night since neither could penetrate the other. And I also knew a guy in college who believed that a gay guy who "received" anal was no longer a virgin, but that the "giver" was because that kind of insertion "doesn't count".

And then we have the unfortunate reality of rape and molestation, which is a whole other kettle of fish. Personally, I think that sexual acts that are forced on a woman or man/boy or girl are not at all the same as ones that are shared willingly, and that it's up to that individual to determine if they want to say that was their virginity or not.

What do you gals and guys think? Do you have a strict definition of what sex and virginity constitute, or do you think it's more open to interpretation like I do?