Mushroom

Hmm... good topic. Not counting one-offs,
1. 3 weeks
2. 3 months
3. 3 years
4. 2 months
5. 2 months
6. 3.5 years and counting...

#3 started last year of high school then turned long-distance
Looks like #6 will be the last one on this list...

I'm 22.