The character of Han Solo can be described in many ways: confident, cocky, cool, cynical, skilled, and of course, attractive. But is he smart? Some of the decisions he made throughout the original Star Wars trilogy were smart, while others were questionable or downright dumb. Many of Solo's victories come down to dumb luck, but he very humanly thinks he's responsible for them. From the first movie:
Yavin
Han wants no part of an attack on the Death Star and he’s taking his money and leaving before the Rebel base is destroyed.
Verdict: Smart
Assault on the Death Star
Han comes back in the nick of time to save his buddy Luke, giving Luke a clear shot on the Death Star. This is one of Han’s most heroic moments but it was also a little stupid. But here Han isn’t any more stupid than the entire Rebel Alliance.
Verdict: A little stupid but it worked out
So what's the overall verdict? It appears to me that falling in love affected Han's decision-making skills. Read the data that goes into the judgement of Han Solo's judgement at Uproxx. Strangely, nothing from The Force Awakens or Solo is included.