Ignoring means someone is trying to get your attention and you don't notice or you act like you don't notice.
Pursuing is chasing after. Trying to get someone's attention.
Pursuing when someone doesn't want you won't make up for ignoring them when they did want you.
If you want to 180 pursuing, then learn how to validate what she says when she initiates contact.
As for GAL, yes, in the beginning it won't be very much fun. You'll be there and all you will think about is your marital situation. This is why activities that are new and different and require you to learn and focus are great choices. It gives your mind something it has to focus on, so that leaves less mental space for thinking about your situation. Keep GALing anyway. It will get better.
Me: 44 H: 44 Kids: 20, 16, 16, and 10 Together/Married: 22 years H announced he was emotionally detached and considering D: 4/4/16 H announced he is going to try to stay and reconnect: 5/1/16