This is your life - it's not a rehearsal!
Have you been on your own long enough?
Have you a nice lifestyle, but no-one to share it?
Do you have too few opportunities to meet people of the opposite sex?
Are the people you do meet the kind of people you would wish to meet?
Do you lose yourself in work, leaving no 'quality time'?
OK, we could go on and on, but you've probably got the idea!
You must make the first move.