Let him think you are with someone else. Don't clarify a daggone thing. He lost the right to know when he walked. Don't lie but don't offer any explanations. You are right. Ignore the texts. If you aren't home or aren't finished with what you are doing then let him sit at the house with them until you get there.
Yes it hurts. I was so upset tonight. Then I cried in my room. My room. I don't even like saying that. Take the time to figure out what you actually want. Do you want to try to put your M back together or not?