I play a lot of text adventure games (not all of them are Twine based), but most of them are either M/M and/or "Furry" and have sexual content (a lot of them have ways to skip seeing it though). So if you are ok with/into those types of content I can recommend a bunch of text adventure's to you
Trials in Tainted Space & Corruption of Champions 2 - Any sexuality: https://www.fenoxo.com/play-games/
Liliths Throne - Any sexuality: https://lilithsthrone.blogspot.com/
Flexible Survival (single player) - Any sexuality (heavy focus on transformation in this one): https://blog.flexiblesurvival.com/
Outland Wanderer - Gay: /__site/f1shsticker.itch.io/outland-wanderer
Lust Odyssey - You can choose any gender/genitals but ALL characters are male: /__site/xperiment.itch.io/lust-odyssey
Broken Dreams Correctional Center - Any sexuality (heavy focus on BDSM): /__site/rahimew.itch.io/bdcc
Lustful Desires - Mostly Gay as most characters and enemies are male: /__site/hyao.itch.io/lustful-desires
Wasteland Lewdness - Any sexuality (heavy Fallout inspiration): /__site/icy-viridian.itch.io/wasteland-lewdness
Orveia - Gay: /__site/orveia.itch.io/orveia
Tavern of Spear - Gay: /__site/fd-caro.itch.io/tavern-of-spear
Dawn of Corruption - Gay (heavy focus on muscle/weight/size gain): /__site/sombreve.itch.io/dawn-of-corruption
I am probably forgetting some but this is a good start for now, hope this helps