Step 1: SKSE

Download the newest version of SKSE (as of this post, it is 1.5.9). Decompress the archive and merge it with your Skyrim folder (usually C:\Program Files (x86)\Steam\steamapps\common\Skyrim). Note: this includes the /data folder included with SKSE-- without it, even if you load SKSE, the keyboard controls will not work.

Step 2: FNIS

Download FNIS 3.0 (assuming you don't already use FNIS and/or don't know how it works). Decompress the "ALWAYS necessary" archive and merge its /data folder to your Skyrim/data folder. For the purposes of Mini Lovers, this is all you need.

Step 3: Mini Lovers

Download Mini Lovers (Diese Mod hier) (Mediafire link for ML 0.2.3.7). Decompress it, and merge its /Data folder with your Skyrim/data folder.

If you don't already have an erect-version male body replacer, the ML author suggests Better Males -> Nudes - FavoredSoulMeshes - Erect Version. Just be aware that installing this will make all men have hard-ons when nude.

Step 4: Make the animations work

In Skyrim/data/tools/GenerateFNIS_for_Users, there's a program called "GenerateFNISforUsers.exe". Run this program, and click the big yellow Update FNISBehavior button. Exit the program when finished.

Step 5: Activate the .esp

Use whatever utility you normally use to activate the MiniLovers.esp file (the Skyrim Launcher, NMM, etc). It doesn't seem to matter where it is in the load order so just put it at the bottom.

Step 6: Play Skyrim and try it out!

Launch Skyrim with SKSE. When you load your last save, you should see "Mini Lovers Rape spell added" in the upper left corner of the screen. Assuming you've done everything correctly, you should be all set.

Usage

The Mini Lovers rape spell is listed under Destruction magic, and the spell itself has no associated animation. Equip the spell, and stand fairly close to the person you want to use it on-- its range is quite limited-- then activate the spell. When hit, the spell should "grab" that actor and begin the first sex animation.

There are a few keystrokes you need to know to use the animations at this point. They are as follows:

Y: This changes the sex position. As of Mini Lovers 0.2.3.7, there are only five or so that are present. If you go beyond that, you'll just see the actors standing doing nothing. Using shift-Y will go through the positions in reverse order.

G: This switches the giving/getting position of the actors. This is especially helpful if you are playing a girl character and you don't want to peg your target.

H: This changes the "stage" of the animation. There are four stages to each available sex position, so pressing H will move from one to the next. Like with the Y key, pressing shift-H will go through stages in reverse order. When you pass the final stage of the animation, both actors will fall down and you will be free to move around normally again (this is important, because if you don't do this, the other actor will be "stuck" to you when you move around).

Personally, I couldn't get the movement keys to work and the perspective is poor for actually watching the animations (especially if you switch into the "getting" position). Using the Skyrim console, the "tfc" (toggle flying camera) command will let you move the camera around freely to whatever angle you'd like. Even in flying camera mode, all of the keys listed above work. Just remember when you're finished to toggle tfc off again, so you can resume control of your character.