Finding true love

I am age 69 but after all these years gone by I seem to make the wrong choices,been married twice and don't want to make a third disaster, I have often thought that my life has been messed up because I was born prematurely, The other problem I have is I am very fit with a lot of energy,and wondering would it be a disaster if I went for someone a lot younger.
Can anyone tell me what should I do.
Ever hopeful Malcolm