Is there any difference between these three phrases: capture/win/steal sb's heart?

Question

Do capture/win/steal someone's heart mean the same, especially in American English? Or is there perhaps a subtle difference in meaning?

When I say 1) "Krispy Kreme Donuts will steal your heart" 2) "Krispy Kreme Donuts will win your heart" or 3) "Krispy Kreme Donuts will capture your heart"

Do all three sentences mean the same?

Does the phrase "win sb's heart" imply a romantic connotation?

According to my paper dictionary and online dictionaries, there is no difference between these verbs, e.g.:

Merriam Webster Dictionary
win/steal/capture one's heart
: to cause another person to feel love for one • He was determined to win/steal/capture her heart.

The Free Dictionary
steal someone's heart:
Fig. to capture someone's affections; to cause someone to fall in love with oneself

Macmillan Dictionary
win/capture/steal someone’s heart
• to make someone start to love you

Oxford Living Dictionaries
steal someone's heart
• Win someone's love.

Answer 1

By definition, they probably mean the same thing. But the usage may vary based on the context. 'Steal' sounds more aggressive when compared to 'win' or 'capture'.

Krispy Kreme Donuts will steal your heart

This probably is the best among the three to use when it comes to marketing the particular brand of donuts. That's because, 'steal' will imply that the donuts will, without doubt, taste good. The confidence levels are high and that will positively impact their marketing.

Krispy Kreme Donuts will win your heart

This is much more passive. It fails to create a 'punch'. By using 'win', the catchphrase lacks the persuasive power that a marketing campaign should deliver.

You should use 'win' when the context is light and subtle. For example, "The Italian won their hearts by showing how polite he can be".

Krispy Kreme Donuts will capture your heart

Although not as passive as 'win', capture also fails to deliver that good impact, when it comes to marketing. Capture can be used to target subtle contexts, for example, "The aroma of the Colombian fresh ground coffee captured her heart".

In my personal opinion, by using 'capture', the context switches to a kind of intimate feeling between the subject and the object.