pinkpeony
As a married man I don't find this acceptable
I have friends whom are women but by no means would I find even tasteful flirting (via text, phone or in person) acceptable in the least. Such communication is not mature at all. Period
If he has a drinking problem he should address it and avoid situations, such as bars and younger "party girls", completely. A woman (or man for that matter) who doesn't respect the married, private life you and your husband share, are not worth the time anyway
I wish you well and hope he ceases to communicate with these women immediately