Hey there, first off I want to say your not silly or anything else, you feel what you feel. Neither right or wrong...it just is.

I think it's fairly common for people who find themselves financially stable for the first time to feel faced with chances, choices and decisions they have never considered before.

Also a loner, and after my 10 year relationship broke up I needed time alone. 7 years later it's still the best decision I ever made for myself.
I think so long as you aren't disappearing into a hole, or locking yourself away somewhere.
So long as you're still doing things to encourage growth in your life, in whatever fashion, wether it's education,travel a new path I would say go for it.

Even if your running from something, I would say So log as you acknowledge that and give it due process, it's not necessarily the wrong thing to do.

I am a strong believer that human relationships aren't meant to last forever.
We each grow and change, mature. Our tastes develop, our attitudes, wants and needs alter. The thought that two people could grow at exactly the same time, speed, wanting the same things meeting each other's needs perfectly, to me seems not only highly unlikely but a false expectation brought on through a society which is inconvenienced by change and challenges to the perceived norm.

Anyway, this has got a little political, the short version is, this is your life, of which you have one.
If you are unhappy, no longer in love, ready to move on...then do so.
Just be careful if running is a pattern or habit you get into in an attempt to avoid,something else. In those instances no matter where you go or how far, it's never enough.

Good luck with whatever you decide.