Sen prefered his sexual partners to be more experienced and Blake trumped everyone he had known; the way it should be. The man was incredible, much more dark and twisted, but that was what made being with him so exciting. The competition for dominance, everything. No, he hadn't any idea of what being with Blake would be like and he never regretted it. As with all aspects of his life, Sen was not content unless he made the first move and it was only natural he did so with his lover.
Excellent. Not quite the auditory reaction he wanted, but sufficient nonetheless. He continued to grind himself against Blake until he had enough and moved down the other man's legs, pulling down his trousers as he did so. His mouth lowered to the hardened, warm organ of his lover's like he had done so many times before and started his mouth's ministrations which he knew Blake liked. Teasing him until Blake was close seemed to be the plan he chose and Sen continued. Yes, he'd just see what kind of reaction he would get now.
Blake happened to be the second man he'd slept with and the first one to whom he was attracted. That was all there was; pure physical attraction and the desire to make someone need him. Blake was a challenge, always a challenge, and Sen sought his power fixes in different ways. He was greedy, always wanting more power and control; hardly anyone could stop him. A lone wolf, a towering figure to be feared and respected - that was who he was.