I'm still a little confused,

So, you had sex with your ex, and then he sent you a text. And the text was sent the next morning?

I want to know if he is really your ex, and wether you really has sex. And what he wrote in the text the next morning.

Having sex with an ex, and the next day getting a text, seems rather perplex.

If the sex, had come before he was an ex, I'm sure you'd never have recieved a text.

What happens next? Nobody knows, just remember to avoid the sex, with your ex. Or perhaps you should send him a text.