That's rude. I'm a wonderful brother. [He's a stressful brother, as Garlan lovingly puts it]

Perhaps soon I won't have to be away from you any longer. [Once they fully take over Westeros and put Renly on the throne where he belongs. Loras can't wait for that. Both because then all this planning and scheming will be over and because Margaery will be away from the Lannisters. Once Renly is King, they'll make Margaery his wife again. That's been the plan all along] We can be together every day and no one will even think to question it. [He kisses Renly again, gingerly leaning into him. Hopefully the kissing is sufficiently distracting and Renly won't notice him trying not to move too much]