so my ex and i have been texting lately. but he has a gf. its been going pretty well but today it went downhill. his mom found out and texted me askin who this was. he told me to say some guys name so im going along with it. idk y the mom likes his gf tho because she cheated on him like 3 times. buh thats none my business. so anyway.. im going along with it. buh im pretty sure his gf knows its me and if she does find out what should i do????