For the best interpretations of the character this isn't the case. The idea that Frank goes weak at the knees for Cap was introduced by Mark Millar and Matt Fraction during the Civil War storyline and it was completely cringeworthy. Outside of this any time they had crossed paths beforehand at most you could say there was a mutual respect between the two. Frank never treated Captain America as some sort of godlike commanding officer that he would obey without question. I am not on board with the writers that have taken forward the sycophantic attitude Frank has towards Steve since Civil War. Thankfully most writers haven't. If anything Frank would go the other direction having no time for him whatsoever imo and regard him as a finger waving nuisance, a bit of a buffoon.