Try asking her about it and see how she reacts, but the more people will see the more their gonna wanna know who the guy is unfortunately for him, some can be unhinged. There is also a 50/50 percent chance that she could have sent him nudes if she really likes him. Obviously they couldn't be posted on here it would be against tos, there's a chance of a leak if they ever break up. Or he might reveal some of her dirty secrets, it happens sometimes.