It's an interesting thing when you are with someone who isn't into the same things you are, and especially difficult when it comes to tattoos. If you are truly passionate about tattoos and strive to get good art on your body then I think that will reflect positively on you. Most reasonable significant others who aren't tattooed or have very few, regardless of their prejudices will hopefully be supportive of that. Of course, in certain cases where people are out covering themselves in Miley Cyrus or the "c" word, I think most husbands/wives of that person would be thinking "holy shit balls, hit the eject button on this relationship!" A little butterfly shouldn't be a problem for anyone, unless you decided to get it on your hoo-ha and couldn't be involved in shenanigans until it healed ;) .
There is a fine line between a passion and obsession. One allows you room to live a balanced life that will include your friends/family. The other has you missing car payments and forgetting about anniversaries. One of the things I enjoy about tattoos is that the cost and limited schedules of people I want to get tattoo'd by forces me to slow down on the process, regardless of my propensity to go all-in with my hobbies. My only fear is to someday be sitting with a bunch of cash in my lap and no space left on my body to tattoo.