Hi Appletree ~ Your husband is a cheater. How on earth are you supposed to trust him? A marriage without trust is nothing. Plus he says that you're not "suitable for his house." What kind of thing is THAT to say to your wife?

That's HORRIBLE.
And besides that. your inlaws make trouble for you, as if you didn't have enough trouble. They need to stay OUT of your marriage!!!
You and your husband need to go to marriage counseling. Do you think your husband would go? If he WON'T go, I would file for divorce. What's the point of staying if he won't work on the marriage? He NEEDS to help fix this marriage, and by going to counseling, he can do that. So see if he'll go. Like I said, if he won't, then pack your bags or else throw HIM out!
I wish you the very best. God bless and please take care of YOU. Hugs, Lee