Support his decisions and show him that you recognize what’s important to him and you have similar values. For example,

It’s focused on people over 50, and I have to say they are the best in the online dating industry.

They were a couple until his death, and she said she never thought she would be in such a position.

While Tinder, Grindr, and so on require crafting your own conversation starters, Hinge makes it easier via built-in prompt questions.