One significant point in the article that i agree with is that the euphoria experienced by youths during a first love can make it more difficult to find happiness with a future partner.

If youths had a very passionate first relationship, they may expect something better in their future relationships after having experienced their first love, and use that first relationship as a benchmark. This will cause them to be constantly pursuing something extremely unrealistic as they try to strive for more than what was in their first love experience. They will thus never really be satisfied with subsequent relationships in future as they are always going to compare other relationships with their very first. This is why I agree that the euphoria experienced by youths during a first love can make it a lot more difficult for them to find happiness with a future partner.