Husband getting my text messages i send to someone else

ok so either my iphone or his is going wacko .... if i text my sister he gets my text to her and her reply to me.. i have group messaging off on both phones..he is still getting the texts .. if i shut imessage off he does not get them.. i have turned it on and back off again it doesnt reset it.. anyone else have this problem ? or know how to fix it? i just updated the phone last week with the new update..thanx for ur help..
chrissy

are you using iMessage? If so, are you using the same appleID?

i am using imessage.. if i shut it off it stops... and no we r not using the same apple id.. this started about a week ago with my sister AND my mother,.. he would get all my texts to them and the replys.. i called verizon they had me shut off the group message which worked for moms texts but not my sisters.. so now its just her .. all other texts r working properly...