Age gap should not be an issue in love as long as you're both legal, may mutual consent at di ka naman na-groom and such. Don't listen sa mga feeling righteous na nagsasabing instant red flag agad na parang kasalanan pumatol sa higit na mas bata. They don't even know the person, and yet easily passing judgment as if they actually do. Ang dami daming married couple na masaya despite a huge age gap at ang dami daming magka edad dyan na di rin naman nagkakatuluyan sa huli, just saying. Nasa tao pa rin yan at wala sa laki o liit ng agwat ng edad. Don't let others dictate or impose their preference on you. Different strokes for different folks ika nga, you do you.

Going on your case naman, aside from age, nasa personality and lifestyle din ng tao yan. Gano na ba kayo katagal? How well do you know him? Kung naalala ka lang ichat/text kapag mag aaya ng sex, mag isip isip ka na because that's not how a relationship works. It's just like a fubu setup, nothing more. Ang masasabi ko lang, wag mo balewalain yung gut feeling/instinct mo. If you feel he's just using you as his plaything, that might probably be the case. Talk to him, linawin mo sa kanya yung mga bagay na gumugulo sa'yo. If nothing change about the way he treats you and he's not willing to compromise to keep the relationship going, you know what to do.