Help me find this manga pls!

Help me pls!! My lists have all disappeared and I can’t remember the name to this manga. （/TДT)/
It’s a Korean manhwa, I think omegaverse. it’s about MC who always failed his exam and wanted to jump off a bridge but then gets saved by ML. Then something happened and they agreed to get married (to pay for MC’s tuition fees I think )but they both need to wear a watch that tracks how much lovin they give to each other.
Then I remember one chapter where ML hurt his wrist and was in hospital. MC came to visit and they did the (▰˘◡˘▰) under the sheets.

Please anyone who knows this manhwa, help a desperate sis out!!