Oh, wow I didn't know that! (about the filter) I was just noticing the other day how sometimes when he swims in front of the filter, he looks like he's being pushed away. I was wondering if that was a good or bad thing, but I guess I was too wrapped up in the disappearing fins to ask? Oh, yes, there is a filter, to answer the question. lol I guess I will try wrapping some panty hose around it. I've read that it needs to be pantyhose that has not been washed with soap. Should I go out and buy some, and wash them really good in scalding hot water, or will it be ok if I just wash some that I have with really hot scalding water? I suppose it would be the same. I've been looking for those filter media bags to put over the filter, because I thought for a while that maybe his fins were getting caught in it, but I can't find any.
The sun is across the room, and there is not much direct sunlight to begin with (my room is at a funny angle; I get the light from the sun, but no real "rays" of sun. Does that make any sense?). I mean, it gets light in my room, but I still have to turn my light on if I want to read something. I don't know if that counts for direct sunlight. I just know that I read somewhere that you don't want to put the fish in direct sunlight bc it might stress him out or something to that effect.
My boyfriend is silly that way, I guess like any betta owner's significant other. But I was just showing him the other day how Andrew will let me "pet" him (he will let me touch him when I'm cleaning the tank. When I'm not cleaning it, however, not so much. lol). As for the cave, a mug would probably work great! I hadn't thought of that. I've been looking for a cave to put in the tank, but I'm afraid that the edges are too sharp. His fins have been torn up enough (apparently by his own silly self), I don't want to endanger him! So I guess a mug would be the perfect solution! I'm glad I'm on here, you guys have the best ideas. =]
p.s. Sorry I'm all over the place, my mind is a pretty busy atmosphere.