I'd rather be sorry for something I did than for something I didn't. If you don't then you'll never know and always wonder, if you do and it doesn't work, then at least you know, and I'd say it's better to know than to wonder - it'll eat away at you over the years, and you'll find yourself wondering in ten years what would have happened if... Also, it's always easier second time around - there's only a certain amount that one person can hurt you, and being left the second time by a person never hurts as much as the first time. Go get her!