Is my Scorpio man cheating?

by Angela
(Canada )

Hello im dating a scorpio man and i sometimes think hes cheating but sometimes not and i was wondering if someone could help me . he constantly tells me he loves me , scratches my back for hours , always wants to have sex with me hes always giving me food and little gifts and stuff.

He texts me as soon as i leave his house , and as soon as i wake up in the morning. he feeds me, takes me out, always tells me im beautiful, pretends to be interested in the things im interested in and more, but then sometimes he takes off and partys and i don't hear from him for days, he still talks to his ex even though I've told him not to for years, (we've been together five years ) he lies about everything, even things that there's no need to lie about, and he does weird things sometimes for no reason, like.. wants to take the stairs instead of the elevator. and he FREAKS whenever i try to look at his phone even if there are no messages in it. But also , we have different friends. and hes old enough to party ; im not , and we are together every day . so maybe he just wants time away sometimes ? i don't know what to think , can someone please help me? Thanks !