A sense of "belonging" and "interconnectedness" come up in many models of suicide and having a supportive social circle is seen as a protective factor against suicide attempts. For those reasons I voted yes even if loneliness isn't the primary driving force behind my desire to kill myself. I'm an introverted person and have never been the type to want to have to juggle the needs of too many friends and acquaintances. Socializing can be nice from time to time, but no matter how fun I may find it, the experience is always draining. A handful of friends was usually ideal ha ha.
Companionship, does well to blunt the pain of existential crisis though, I'll concede that much. In my experience, love makes for a potent delusion that tones down my lucidity just enough for me to want to try to live out a full life. It was never a cure all, but wanting to see a future with someone is a good motivator for certain. I've all about given up now, because every single possible permutation of my life doesn't appeal to me at all, so forget that.