If I feel my friend is lying to me but assures me I'm just assuming, even though a few facts have popped up indicating they are lying; Should I just trust them and get over it, or is it time to walk away from this person.

We have always been close until recent.

He always tells me he loves me and when we are together he seems like that is the truth. But certain online interactions there have been some lies, or at least seems that way.