Wait, wait, hold on, I think... yup, I do think I just died from diabetes. This, THIS is exactly how I imagine them to act around each other. Big Mac would just be minding his own business when all of a sudden CARAMEL GENTLE ATTACK GLOMP! And then he greets him in any number of adorable ways. Big Mac would just smile and shake his head, and then do one solid bump with his back end to lift Caramel on his back and he'd get a horsey-ride to the nearest bench (or barn/bed, depending on the mood of the situation) where they'd just sit there cuddling and laughing for no reason (or doing much more intimate things, again, depending on the situation). Caramel then might get suddenly tired (maybe his biological clock requires him to sleep in the middle of the day or something) and he'd fall sleep on Mac's shoulder and there they would stay for an hour or two. After they have dinner together Caramel would be off to his night job and return home to see his coltfriend unexpectedly in his bed, sleeping after attempting to wait for him to come home. Caramel would delicately slip under the covers with him and lean in close. His presence is enough for Big Mac to react subconsciously and pull in the tan pony closer in a comfortable hug and they would sleep like that the whole night until Big Mac would have to get up early to pick the apples and Caramel, despite his lack of sleep, would follow and continue the cycle.
Early on, i asked "Why caramac?" i was answered "because candied apples" This statement is now rendered pointless, by this picture, as a picture is worth a thousand words, and that was just 3, or 5 if you count the question