In D&D, there are spider-elf hybrids known as "driders." Here I present a female drider mourning her mate, tragically crushed in a cave-in.
Female black widow spiders are notorious for eating their mates, but studies have shown that if the female is well-fed, she is extremely unlikely to eat her mate. It makes sense when you consider that the black widow's venom is limited, and if she squanders it by poisoning a mate, then she may be incapable of defending herself during a time when she really needs to protect her vulnerable young. A fertile female will advertise how well-fed she is with her pheromones, and male black widows will avoid poorly-fed females if given the choice.
I'm not suggesting that black widow spiders are cuddly; they're still deadly bugs, after all. However, it's not impossible to imagine that spider-people might have genuine feelings for each other besides food.