Can I find a cdrama where the leads are in a happy romantic relationship from the first episodes?not as in a fake relationship or an unhappy marraige

Boss and Me fl donates her bloods to ml's sister so ml bring various healthy foods to compensate her (at first he wants to give her money but his sister said it's not sincere enough) and they began to eat lunch together and start developing affections

Falling into You ml tries to catch fl's attention (by  high jump) so that she agree to become his coach, they start training together day and night then they fall in love

Love O2O at first fl and ml met and wed in the game then they meet in real life and start dating in real life

Night of Love with You fl is a transmigrator, she transmigrate into a novel as a villain. In order to stay healthy (she had heart disease, if I remember right) she needs to kiss the protagonist or anyone with similar genetic with the protagonist (ml) so from the first episode she already kiss ml. There's some time skip and some complex storyline change happened but from the start fl intend to choose ml over the protagonist to avoid her BE.

Only for Love ml and fl flirt with each others from the start even though at first fl chase the ml to gain resources