Loneliness...

I have been struggling with a little bit of loneliness these past couple of days...  Its just been a dull ache in my heart that brings me down a bit.  I feel the desire and the need to have a friend to talk to, but it feels almost like there really is no one there to relate.  Everyone is so busy with their lives, has their own issues/problems... its hard to just go up to them and say, hey... want to hang?
When I am really busy, with work, training for 5K, running my daughter around, I am fine.  Its those moments of nothingness that are hard.  When nothing is going on, and there is plenty of time to just chill and relax.  There are so many things I can and want to do... so many things I want to work on today, but the dull ache in my heart, the emptiness I am feeling is distracting, and it makes me not want to do anything...
I guess I just need to write about it to get it out.  I know once Monday rolls around I will be fine, but right now, I am just sad.