SOS ... 😅

So I’ve been with my boyfriend for 4 months now & I’m currently at his house & just noticed he had Mulan 1&2 in his movie collection & I asked why did he have those & he said they are ‘Nina’s movies... aka his brothers baby momma. I just shrugged it off but ladies is it weird that he has his brothers ex’s movies ??? Should I ask about it again or am I just thinking about this too much? Thank you!

Addition: Also I kinda want to add that last Christmas before we talked / got together , he got Nina a Christmas present (a salt lamp) but this year still has yet to get me anything due to money problems but yeah why would he get her something for Christmas?? I find that weird or idk I might be think by about it too much.