If there is a problem, you need to address it with them directly. You need to be open & honest about your feelings without dumping on them. Ignoring you in this way doesn't sound good although there could be a need for them to spend time together. Maybe you just need to invite yourself in. Are you feeling like an intruder? Or is it just them not including you?
Get this out in the open ASAP & stop wondering. Wondering & fretting will get you nowhere.
Me- Bi-female-early 40s- Single Mom to 2 young boys
Exploring & having fun for the time being after a long & unhappy marriage
There is no failure. Only feedback. -Robert Allen