My 18 year old son is dating a 34 year old woman

My husband and I are going crazy over this. 18 is an adult, we know that but this woman is 16 years older than him, she is older than one of our daughters and our other daughter is older than him. We just find it weird and her being so older makes it weirder, she looks old enough to be his mother.<br><br>He calls her mom sometimes or mommy as a joke to make us angry, it's not working and making things worse. He also called her an "ahh-ma" which is Asian for "aunt" but in this case I think it's a short for "Asian mom" but this is worse as in my culture calling someone an Asian mom implies that is like a mother to you so this is worse.<br><br>We do not even feel like calling her by name. We can't even get ourselves to do so. I don't even know how to address her. Doc, Mrs._______ w/e her surname is, miss_______, girl, lady, young lady, girl, woman, ahma. idk.<br><br>My son is above 18 and legally an adult, we can't tell him not to date but I think he's too young and inexperienced. He's never had a serious relationship like this. <br><br>My kids are Asian and I'm European and my husband is Asian.<br><br>She's from the same country as my husband. I'm European. We live in Asia too. I don't know if she's married or not. She says she's single but people lie about this. We don't want to get in trouble with someone's wife or husband.<br><br>None of us have met her before, this relationship is new and unexpected. She looks older than her age and he looks far younger than his (my son). She looks Gen X/ millennial age range and he looks 15-16<br><br>We're just freaking out about this. Stay calm and what not but she's just too old.