Will a pisces man regret to this?

I was just wondering if a pisces guy would regret letting go of someone that was nice and good to them someone that they felt happy with and everything was always peaceful together but it was something they weren't used too and had a fear of someone getting close to them because of past experiences so then they pushed them away and just let them go instead?

I'd be really interested in your thoughts or if you have also done that push someone away through fear.