Some context. They have been together for 5 years and have been living together for about 2 years.

I'm new to trp and I'm not sure that my advice I would give is correct. IMHO he should pack his stuff and move out even though it's very inconvenient.

However I see other options like coming home late always, starting to groom himself more incl. buy new, expensive clothes. Just giving her the impression he might be seeing someone. Dread game basically.

What is the better move? Other suggestions?