Nothing wrong w/ setting boundaries about the shared living space & friends.
But get on your computer, and then get all cheery & tell her you are going out to meet up with some people. Then go do something around people, even if it going to a coffee shop w/ a book or the library to use the computer to investigate local activities that you might want to get involved in (check their bulletin boards too). It doesn't matter what so much, though something you actually enjoy is of course better, and it's harder to mope when you are around other people.
Me: 50 W:43 S6, S3 M: 12 yrs. T: 17 M is bad & Not happy Bomb Mar '14 S 5 Feb '15 D Bomb 13 Apr '15 (but "no hurry") DB Coach May '15 Wants proceed on D Aug '15 Starting 1-on-1 negotiations Sept '15