My son is a tiger and I'm a horse . We have fallen out and not getting on . Will he try and build a better relationship with me in future.

Oh, it's a common phenomenon that a son has some conflcts with his mother. Of course, he want to build a better relationship with you. Your son often has different opinions with you. You need to understand him more. And figure out what's the true things he wants to express.
More patiennce will help you. Don't worry.