If you are not living 24/7 there and met your partner in a tourist resort you can be pretty certain you are not the only benefactor.
The flashing red warning signals are when they talk about marriage or living abroad and have kids by others.
Plan to enjoy your retirement.
There are some fine partners to be found in DR but I doubt very much you will find anyone in the tourist zones and in the PP region, so relationships will be what they will be in those parts and should be approached with eyes wide open.