Should I tell her?

So I have this friend on Facebook I've known her for awhile (through school) we were never close or anything but if we see each other out we say hi and do the Facebook thing (likes and stuff like that) well I sometimes get on this app called 'hot or not' (real quick for those of you not familiar you post pics and other ppl rate you and it matches you with ppl locally who find you attractive and you them to me very inappropriate if your in a relationship) so I'm just on browsing and who do I come across but my friends husband and in his profile it says he's looking to date a girl 18-30 yo now this is where it gets sticky they just had a baby 2 weeks ago and they also have an older child together.. Im really torn because I would want to know if it was me but I don't want to possibly break up a family...

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