What can I do, what should I do

My ex and I have been seperated for about 6 weeks now. Might I add that we still live together. During this time we have been trying to work out the issues that caused the seperation to try and salvage our relationship. However, yesterday I got off work early to go spend time with her, but I walked in on her and one of our "friends" in our bed together. She said she doesn't feel anything for him and that she had to test how she felt for me. Technically it wasn't cheating because as I stated, we are seperated. I still love her and I know she still cares for me, stating she loves me but doesn't know if still in love. I still want to get back together but could really use some advise. Am I wasting my time? Am I deluding myself into believing this can work? Any help would be appreciate.

Even if it was some sort of test, it's not right to do that sort of sneaky thing to you. I think she was lying because she doesn;t need to go to bed with someone to find out how she feels for you. Kick her out. She can't behave like that in your home. it might not be the first time, either. You can't ever be sure of or trust her again. Remember the reasons you separated in the first place and don't get caught into a foolish dream of what 'could be' - but isn't.