I'm going to bring up my jealousy to my significant other.
What are you so jealous about?
When we were dating, I bought her gifts and took her to dinner and she didn't even offer me dinner
It's not healthy to be jealous over petty things. It's best to just let things go in this situation.
Why should I do what you say? I'm just going to date her for a bit more then dump her.
You shouldn't expect to receive something in return for a favor. Maybe your missing what they have done for you because of your blind jealousy. Ask them if they are still in love with you and why don't they show it through more gifts.