How may people actually meet their significant other in college?

As far as I know, in some countries, there are some “community financing social practice” that works in the following way: For many years, the parents may attend other families’ offspring’s wedding by paying these families. When the offspring of the parents get married, these “other families” will attend their offspring’s wedding and kind of pay back (maybe plus some “interests”) whatever they contributed to them in the past.

Some young generation may not like this kind of wedding but they may reluctantly tolerate what their parents want to do (otherwise this family could not recoup the cost.)

This potential concern is occasionally in my mind. I know our family does not participate in the “community financing” thing because there is really no such practice in US as far as I know. What if the other family has been actively participated in such a “community financong scheme”? Is there any possibility that their family also expects us to do this as well? (But we really can not as we have not done this in the past decades.)