I'm really sorry but you cannot.
These are just the downsides of a relationship breakdown. That does not create contractual liability.
The only thing that may be claimable is the ring as that is a gift consequent upon a condition of marriage although that may not succeed I'm afraid.
I'm very sorry but there is no contractual liability arising from finishing a relationship.
Can I clarify anything for you?
Not if they were gifts.
You can recover anything you loaned.