When the love curse hits Wei Wuxian, he isn't worried. He thinks it is a minor inconvenience, but quickly alleviated. Afterall the curse is solved purely on physical contact, so as soon as he touches his husband he'll be fine. It's honestly somewhat romantic. 'The touch of the one you love most will lift the curse mark from your skin.' So he isn't worried, until the curse doesn't lift, and he's left with the horrible, iron clad proof, that he does not love his husband. (The one where Wei Wuxian finds out that he apparently doesn't love his husband, and doesn't know how to handle the situation. It brings out every dark memory he had tried to escape from.)