Everytime DH goes out she makes little jibes about what hes up to when hes out.
Ie tonight DH has gone out with work colleagues straight from work for a meal. They do this ever so often, just as a social thing as they are all working at various client sites etc. Mum calls and says im too trusting as im not sure when he will be back. Before shes commented that I dont know what hes up to and he could be having an affair. Not much of an affair if they only see each other once every 3/4 months! Its the same when hes away on confrences etc.
I trust him completely and know he's doing what he says he's doing. But mother really does wind me up!!
Try not to be annoyed, it says a lot about her and NOTHING about you. You trust your DH, just try and let it wash over you - if you can't, maybe try to bat it back.
Sounds like she is either deeply insecure or a jealous person. Her issues - not yours. It may not come from a nasty place, she may genuinely worry that you will get hurt and if she is suspicious minded any 'freedoms' your DH has will cause her mind to spin.
Why do people do this!! The only solution to these constant jibes is to be very light-hearted - 'Oh well Mum, if you're right I'll make sure you're the first to know.' Or 'Oh yes, we have a very open marriage, he's got three on the go at the moment I think'. You'll be able to think of more in the same vein. It's a quick and easy way of letting her know that a) you don't take her seriously and b) you are very secure in your marriage. Good luck.