And his relationship with his mother seems to be almost non existant. The difference is that as emotionally unavailable as Ian's parents are at least they seem to be successful enough to support themselves and ever help their son financially.Technically Ian also has financial problems -- he just doesn't complain about them too much and he doesn't get a perverted millionaire willing to solve them for him. Just a dad who pays him a small stipend each month. Ian's relationship with his dad is also pretty strained. He just, again, isn't as dramatic about it as Lena has option to be.
Ian's love interests: Holly, Cindy, Cherry, Emma, Louise, Alison, Minerva, Jess
Lena's love interests: Holly, Axel, Seymour, Mike, Jeremy, Louise, Ivy, Stan (lol), Robert (lolol), Jack, Marcel, Mark
Taking into account a number of these are simple hook ups or joke options, the range of available actual love interests is about even for them both.
Also, it's possible that Nat, Louise, Ivy and Gillian are added to Ian's list sometime in future updates.