Women going to bar without underwear??

Hello,
Last night my GF went out to a bar, it was a fundraiser for her kids school. She calls to say hi and asks if she could come over. Side note; bar closes at 10, she says the fundraiser went till 10:30 she calls at 11. She seems drunk and tired very tired. I say hi and we lay down together. I run my hand along her butt to find that she is not wearing underwear ( she always wears underwear). She makes the claim that it was very busy at home and didn't have time to put any on. I find that very weird and unsure that she is telling the truth. We didn't have sex that night and we usually do every time we see each other. Any thought or advice I want to ask her about it but how do I really get the truth. ?? Is there any excuse like this real, valid? Who doesn't have enough time to put underwear on??

She is not. Start snooping her phone.

Either she had sex or flirted with someone else and that person took her underwear as souvenir. Remember, she was drunk and most people lose their inhibitions and common sense when drunk.

Well I been hearing about girls going to bar without underwear so that their well shaved vaginas are visible but those girls got soon picked up by guys. So yeah first thought was that she did it to promote herself for sex.

Sounds sketchy ~ I've never gone out without panties on EVER. Even if had none clean I'd wear bikini bottoms or something. Your gut instincts kicked in on this one.