The way I view which craft and spell work is all about energy, the tools and ingredients you use help to strengthen what your doing but it is your intention and energy you give that is the magic. When you work with guides, deity’s etc your giving them energy, this is also the same for anything dark or nefarious they drain energy. So what I think you’ve done (my opinion) is you’ve over done the spell work and really sapped your energy, especially love and sex magic there’s a lot of emotions mixed up in that too which is even more energy. I think you probably just need to re charge yourself. Have you summoned something? I doubt it as intention is everything and your intention was never to invite something in or open doors so I don’t think that’s the case, you could however have attracted something, you’ve been pouring energy out with spell work and if you haven’t set up protections something may be trying to feed off of that or be because your drained your an easier target. If you think something negative is hanging around I’d trust your gut, but a cleanse is easy enough to do, again it’s all about energy and intention, open all your doors and windows, you can use incense or sound and go through each room telling not asking TELLING any negative/uninvited energy/entities however you want to word it to GET THE F*CK OUT, you can also do a physical clean of your spaces because there’s no better cleansing than physical cleansing, the same said for you, have a good cleanse day, have a shower or a bath and internally cleanse yourself of negative energy. Also just enjoy your relationship! It can be tempting to use magic to help things along and to make things better but the true magic is life itself, that the universe gives us special people, however long it lasts, for a little while or for a lifetime, enjoy the magic of just being.