Sexual Love
noun
Gender love is that kind of love that has to do with gender parts. That's sexual love.
せいあい
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
大学で、性愛学について勉強しています。
I'm studying sexual love at university.
他人の夫婦の性愛に口出しするなんて、下品にもほどがあるよ。
Interfering with another married couple's sexual love is just indecent.
性欲が無いのか性愛恐怖症なのか自分では判断できません。
I’m not sure if I’m asexual or have erotophobia.