['I went to the bowling alley all by myself because my friends ditched me. It was pretty darn awful.', 'Did you have fun there by yourself at least?', "I tried too, but I felt bad seeing everyone else in large groups having a blast. That should've have been me yesterday!"]
You should have joined one of the other groupls and pretended to belong.  See who would've said something first.
I went to the bowling alley all by my lonesome to day. It was terrible.