>>936921065This is easy, but you have to choose wisely. Choose whatever the most perverted friend you have is (preferably one that drinks), or one who you know thinks your girl is hot. Then wait till its about 11pm wherever they are, because its likely they will be drinking.
Then send a lingerie pic or something risque but not graphic. After you send it, send them a text like "Shit, super sorry man. That was supposed to go to (girls name), cause we sexting, and I didnt even realize I was in our thread. How embarrassing, please delete!"
Based on their response, you'll know if you're good or if they are uncomfortable