We met in high school through youth group although we went to different school. He was close friends with a good male friend of mine who I sort of dated for a minute, and he had broken up with his girlfriend. There was a dance at the JCC and he was asking me who he should go with; I suggested myself 
He was a typical 16 year old male and was clueless! He ended up asking my cousin and I went with his friend and we all went together; not the evening I had planned! A month later my chapter had an event and I asked him to be my date; the rest is history. We married two years after college; this summer will be 39 years of marriage and 45 years together.
My son and his wife met in their early to mid 30’s while at Jazz Fest. My son was with a good friend from home and they ran into his now wife who was a law school classmate of his friend. They did the long distant dating for a year, and then moved to the same city and married two year later.
My daughter and her husband met at work in their mid 20s, dated for 3 years before marrying.
Not that I don’t love my husband, but we were young, and I see a whole different relationship with my kids and their spouses. My close friends and I have had the discussion many times about would we have still chosen our spouses if we met and dated them in our 20s or 30s, instead of high school. What did we really know about long term relationships in high school? Again, we are all happily married, but just food for thought.