i feel guilty

hi everyone,im only new here.

i would just like to share something and if possible get some feedback.

i have recently broke up from a relationship with my girlfriend of 5 years, we have been apart for 4 months now.i have tried everything to try get us back together and i love her with all my heart.we have 3 amazing children together.
i think that maybe she has fallen out of love with me although she says that she does love me and that she wants us to get backtogether but it wont happen.

the problem is that i have been seeing someone else recently and things are going great,she has been talking about maybe getting it a bit more serious but i feel guilty... i dont want to hurt my ex...

is this normal feelings to have?

maybe you should lay off from seeing someone so soon after your breakup
give yourself some time to heal and sort out the stuff from your last serious relationship

Does the word rebound mean anything to you? If you're in big denial about this, your new girlfriend should at least understand this. You are not, and cannot be, serious about her right now, if ever. She is a "transitional relationship".

Try to work things out with your ex. It doesn't sound like game over to me- more details?

You don't want to hurt your ex...but who do you really want to make happy?

You are clearly on the rebound. How can you say you love your ex and in the same time claim that things are going great with someone else?..perhaps the sex is great :)

You should really enhance your communication skills and find out what has hurt your ex so much that she still loves you, but runs away from you.