Advice on serving none engaged alphas

Hi, I recently started serving an 18 year old alpha who's really hot and i want to talk to him more and learn more about his likes etc to better service him but he literally only sees me as an on call cum dump / ass Rimmer. I've met up with him twice and both times he just puts me under his desk and makes me suck him off while he works and ignores me. i find it hot but also sad that thats the only thing he wants from me. He never messages apart from the are you free now i need my cock sucked messages. Any ideas on how i can increase my service or should i just be happy he's choosing me to drain his balls in even tho its kinda depressing.