If you are developing a for a story or roleplay, consider these stages of text-based evolution:
"I just wanted to let you know I’m thinking of you!" SexLikeReal.22.07.27.Kira.Perez.Your.Girlfriend...
This is where two people primarily communicate via text, often avoiding face-to-face interaction initially to build a "safe" emotional bubble. If you are developing a for a story