They made the items to be unique... so there will be some other way to get them.
That´s why im thinking that, this year, all the big 4 will be like the valentine day event. Some prizes and something to make us use nuggets to get them any way.
IF they make a similar thing with the Easter, they can place a checking on if you have, at least, 1 piece of the lovers set, the other ones will be on the lucky wheel with the easter set. So you will have the possibility of getting both. (on the other side you will lose something that will not be in the wheel until you receive the old things)
Like i written before, this is an event. On the events we can try to get lucky or not. On the tombolas 99% of the luck depended on the player paying for it.
On this one, they got 2 things: paying for the valentinus set or getting 1000 friends and the lucky wheel.
Many people got the valentinus... many many more than the ones that got the lovers set. And why? because the valentinus was a "easy pick" since you didn´t even had do make anything. Just grab 750 upbs-nuggets and get 500 to 1000 friends that would send you hearts every 2 days or so... or you could pay nuggets to jump to the next level.
On the lucky wheel it is like the name... lucky. You could try more times to get the items paying nuggets or upbs.
The worst thing you could get where the 100 hearts, 500 hearts or the $1000. Everything else pays what was used for that spin.
(i still think they should kick out the "Friends system" and replace it with higher values received from the longer jobs... on the valentine someone that made 10h of jobs per day wouldn´t even get to the 75000)