Friendship request rejected on Facebook, what should I do?

[bob j]

So I joined this social soccer club hoping to meet new people, I met one guy there (I'm male, straight) and we talked for a bit and had a lot in common, I asked him for his number hoping to grab a drink later, he gave it to me and told me he would add me on Facebook.

A week later, he hasn't added me and when I go to add him he declines, I knew he declined as it came up with 'Add friend' again instead of 'Request sent'. How should I react to this? I am now reluctant to even try meeting new people because of what happened.