I'm glad you got to the point you posted - when I dropped D20 off at school 2 years ago, she told me that the one thing she needed from me was my unwavering support and cheer leading for her first step toward becoming an independent, functioning adult. She promised me she'd call at least once a week and that she looked forward to our relationship growing too.
At that time in our lives, we had been fighting. My issues were centered around letting go. Her issues were with figuring stuff out on her own without my commentary - and pushing me away so she could breathe. The only way she felt she could do this effectively was to say stuff that made me leave her alone.
I know boys don't typically have those issues with moms, so I'm pretty sure that isn't part of your dynamic with Marc.
But... he probably needs you to be really, REALLY happy for him. He's fulfilling HIS dreams for himself, and that's huge. Nature abhors a vacuum, so you'll find other things to do to occupy your time. I sure hope it's not filled with invisible worry! He'd hate that!
Anyway, I svcked it up and oddly enough, I discovered how much I liked having space and time for myself. It kind of reminded me that I had free reign to design my time around stuff that I enjoyed. This year, I'm painting furniture. I plan on starting on the kitchen cabinets right after she leaves next week. While I truly do miss her company when she's gone, it truly surprises me that I'm as happy when she goes back. Go figure?
So give yourself some time to adjust and feel what you feel. Just promise yourself that you won't stay there - you have to connect with friends and support yourself through the transition. You can do it!!!
Good luck- Betsey
"There are only 2 ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle."