It’s not really a matter if he is committed or not, because he can be committed to staying committed. What you want to know are the signs he will commit and how dedicated he really is.
People may seem to think science and love have nothing in common. But those people are completely wrong.
Science is about to answer one of the biggest questions of the century: "How can you be sure someone is committed to you?" It's actually really simple: It's all about sacrifice
These mental abilities include resisting temptation, the ability to multi-task, and the ability to retain new information.
In order to measure sacrifice, they randomly selected one partner to do an undesirable task while the other one watched entertaining videos.
Their willingness to keep going so their partner could continue enjoying themselves showed their ability and willingness to sacrifice.