The cards that disturb you the most, can sometimes be the ones you learn the most from. Ask why.
Yes, I second this. Asking yourself
exactly why you dislike the card... Exploring our most visceral reactions can often be very revealing and potentially liberating. It can be a great opportunity to better get to know certain aspects of yourself.
You can meditate on the card -- as in look at it, and while being present to your reactions, you may consider the following to start with:
-- how does it make you feel (explore and fully experience your physical/emotional reaction)
-- what else in the world or in your life makes you similarly feel that way
-- what else the image reminds you of (such as a memory, a hypothetical or an actual situation/event, an object, a certain time in your life, a dream, a goal, etc.)
-- what you wish could be different about the image (how would you change it, what do you think could make it better); what sort of presentation you would prefer and why; what you'd rather be looking at
-- whether or not you think the image reflects what you think the "true" meaning of the card is; why you do or don't think the image is appropriate or effective in conveying that
-- etc... Basically exploring whether or not there is a certain thought process behind the emotional/physical reaction that you aren't fully conscious of or may be avoiding
I think this would be useful to do, especially with a card like the Lovers... Explore what that card means to you in general (as a concept apart from any specific deck... after all, the cards symbolize different aspects of existence that are reflected in the images)... Exploring both what you take as the 'positive' and 'negative' manifestations of the cards energy/meaning... You can identify different 'types' of love, how you feel about love in general, what role love has had in your life or and/or the world/humanity/nature as a whole, etc.
...BUT on the other hand, if you don't want to go down that road --- A way to get around any kind of artwork that you may dislike is to at least find something that you can appreciate in what it's showing you; identifying the symbolism that has use and meaning to you... focusing less on the superficial aesthetics and more on what the card is really 'saying' to you ...Come up with or discover an actual purpose in the presentation that the artist/creator of the deck chose to use.