There is no doubt, Bhima was the most samarpit hubby. The saugandhika incident also proves that. Perhaps, the others also loved her as much but they were very big followers of Yudi and dared not do anything against his principles whereas, Bhima never hesitated to express his feelings.
The book I'm reading right now "Parva' talks a lot about Draupadi's, Bhima's and Arjun's feelings
Acc to this book, Draupadi was infatuated with Arjun and then fell in love with Bhima during the exile and virat years. Arjun thought Draupadi misunderstood him. Bhima was dedicated to Draupadi but still yearned form Hidimba.
Talk about a complicated hexagon/heptagon/octagon
Just a request @Sabhyata- can you please post the reference to your citations.