Purely from a dealing with an affair standpoint, you should NOT leave the house.

From a legal standpoint, you need to talk to your L about what steps you should take prior to leaving.

From a saving yourself standpoint, please remember what Michelle repeats in the books many many times: YOU MUST HAVE PATIENCE

Me: 35 Her (WAW): 34
D8, S5, D2
T:16, M:9
BD + D: 4/3/2015
EA Confirmed 5/6/2015
Separation under the same roof