There was a little tension, like how Banys tried to get Lute to get with him instead of Advald and how he said he might get hooked on making him cry tar
Yes, it was hinted that Banys was interested in Lute, but that doesn't necessarily mean that there will be a threesome. Although I was more of the opinion that Banys was only interested in Lute because of his tears, and not romantic interest.
a threesome? how disappointing. The manga gave no indication that something like this would happen and now out of the blue this.