Things are only as boring as you let them be.....Think about that.
You stated you had different interests than your wife.....So what are her interests?
While I don't know how (tone, etc) your wife delivered her message, I do feel that you are taking it too personal and not listening enough (hence the meh feeling). I get the feeling that you want to take some initiative, but feel trapped. Some by money, some by the small town, and some by past "deep hurts". These deep hurts are an issue....you have to address them or let them go. If you don't, moving forward will be hard. These are good things for a counselor to help with.
So tomorrow...it is hot....Why don't you take the initiative and invite her girlfriend's family (you mentioned her before...has kids the same age)over for an evening of board games or cards. The kids play, the adults have conversation, and you take initiative while getting out of your social cacoon.