I would like preferably a romance no matter the genre yaoi, shoujo or josie etc. but do your worse

the female lead or main character has to be in love with the male lead and the male lead has to be awear of those feeling at some point but still love someone else I don't really care what the relationship between the female lead, male lead and the person that he is in love with is for all I care they could be wife, husband, sister or girlfriend, boyfriend, female's lead best friend or friend,friend, girlfriend/boyfriend

I don't mind whether or not the male lead love is in love or already in a relationship with said male lead

Examples:
Sora no mannaka
Kimi Dake ni ai wo

If you don't mind yaoi:
Ikemen-kun to Saenai-kun is close to this
Soredemo, Yasashii Koi o Suru (which is a spinoff/sequel to Doushitemo Furetakunai, but the romance dynamic you request isn't in play until Soredemo)

Thanks